Sandoval, a Republican, handpicked the three members of Nevada’s Public Utilities Commission, which last month decided to upend the state’s existing net energy metering programme, severely undermining the case for rooftop PV systems.

“There’s no bigger champion of rooftop solar and renewable energy than me,” Sandoval told local media. But “it would be improper – and perhaps illegal – for me to interfere with [the PUC’s] process”.

“It’s